May 14, 2012

Driest hour is always before storm

Is there truth to the rule that all droughts end with floods?

Corollary: Florida's driest hour, i.e. month, is always before the (summer) storm(y season).

Year after year (except 2010) Florida's
state-wide Keech Byram Drought
Index peaks in May

That’s where we are now:

State wide, May registers as the driest month of the year. (See graph above.)


In south Florida, the situation is made all the more calamitous by it coinciding with the end of the winter dry season and evapotranspiration (sans regular summer shows) being at its height.

The good news is that the “pop up”showers have started to return.


The bad news is that they bring lightning, too!

The rainfall regime of the pop up shows tends to be “hit or miss,” with an emphasis on the former: they aren’t consistent enough, or ample in quantity enough, or adequately well targeted to extinguish drought severity or actual flames.

Despite abundant April rains in the Everglades,
Florida's had a dry spring statewide

That being said, we’re soggier now than a spring ago.

But May and June rains have a lot of “soaking in” to do to fully refill the swamp.

2 comments:

Constance said...

Still, it's comforting to see those afternoon storms once again. It's been a few years since the days when you could set your watch to the storms out over the Everglades ~ building and building, to rain themselves out, leaving us with a damp remains of the day. Fingers crossed for saturating and widespread rain this wet season ...

Robert Sobczak said...

I agree: It's just a matter of time now. Summer showers are popping up.